If you have a one-sided brown patch after skin redness, it's likely PIH from irritation, not melasma. Melasma typically appears as symmetrical brown-to-gray patches on both sides of the face, unlike the localised nature of post-inflammatory hyperpigmentation.
Dr. Shweta Virmani, MD Dermatology, confirms that melasma is "seen symmetrically on both sides of the face." Because your sensitive skin experiences frequent redness (erythema), this underlying inflammation triggers hyperactive melanocytes. In melanin-rich Indian skin (Fitzpatrick types III-V), these melanocytes react rapidly to irritation by depositing excess melanin, leaving behind a localized PIH patch once the redness subsides.
Clinical Identification: Melasma vs. PIH
| Clinical Feature | Melasma | PIH (Your Likely Concern) |
|---|---|---|
| Facial Pattern | Symmetrical (appears on both cheeks simultaneously) | Asymmetrical (strictly one-sided or localized) |
| Primary Triggers | Hormonal shifts, UV exposure, genetics | Skin redness, sensitivity, acne, or physical irritation |
| Visual Shape | Diffuse, slow-developing patches | Irregular spots that follow the exact shape of prior redness |
Dermatological Protocol for Sensitive, Pigment-Prone Indian Skin
Treating pigmentation while your skin is still red and sensitive will only trigger more inflammation and worsen the PIH. A phased approach is mandatory for Indian skin:
- Phase 1: Calm the Redness (Weeks 1-2): Focus entirely on barrier repair. Apply formulations rich in Centella Asiatica (Cica) and Ceramides to soothe active irritation and rebuild the compromised skin barrier. Do not use strong exfoliating acids during this phase.
- Phase 2: Target the Pigment (Weeks 3+): Once the redness has completely subsided, introduce gentle tyrosinase inhibitors. Niacinamide helps regulate pigment transfer while strengthening the barrier. Traditional ingredients like Haldi (Turmeric) are highly effective, but for Indian skin, turmeric's tyrosinase inhibition requires sustained application over 8-12 weeks to safely fade the brown patch without causing rebound sensitivity.
- Phase 3: Prevent UV Darkening: Both PIH and melasma are severely aggravated by India's intense UV index. Apply a broad-spectrum SPF 30 or higher daily, as visible light induces persistent pigmentation in darker skin phototypes.
Hinglish version: https://drsheths.com/blogs/faq/melasma-vs-pih-one-sided-patch-sensitive-skin-hinglish
